Dead ball contact

My whistle had blown, so it either would have been an intentional technical, or flagrant technical. It wasn't flagrant, so it was either going to be an INT tech or nothing. I felt a call had to be made because of the amount of contact -- A1 basically got trucked by B2, but I have no idea if it was INT worthy or not. It looked like INT-level contact, but I couldn't know for sure from my angle, all I saw was the kid falling and hit the floor hard. The whole crowd exclaimed and A1 was in my face after getting up telling me how that is an INT. As I said, I only considered doing something because at the time my partners seemed like they had no idea what to do. This suspicion was confirmed when we were in the locker room and they said they had no idea.